Home / 1,200,688.16-1,656,880.08-656,715.20

Finding the Fourth Proportional to 1,200,688.16, 1,656,880.08 and 656,715.20

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Solution

The fourth proportional to 1,200,688.16, 1,656,880.08 and 656,715.20 is: 906,228.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,688.16 : 1,656,880.08 = 656,715.20 : x
  2. Step 2: Convert to fraction form
    1,200,688.16/1,656,880.08 = 656,715.20/x
  3. Step 3: Cross multiply
    1,200,688.16x = 1,656,880.08 × 656,715.20
  4. Step 4: Simplify right side
    1,200,688.16x = 1,088,098,333,113.22
  5. Step 5: Solve for x
    x = 1,088,098,333,113.22/1,200,688.16
  6. Step 6: Final answer
    x = 906,228.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.